be动词一般现在时课件 2022-2023学年人教版七年级英语上册

系动词be的一般现在时 一般现在时(The simple present tense) 概念:表示现在经常性、习惯性、规律性的动作或者现在存在的状态的一种时态。 主系表结构 I am a teacher. His name is Mike. They are five years old. 1、肯定句式: 意义:表示现在客观存在的状态 主语+be(am/is/are)+其他. He is kind. 我 I 用am, 你you用are; is用于他he她she它it; 复数形式全用are. Have a try: Fill in the blanks 1.Li Ming_in Grade 9. 2.We _good friends. 3.I _ a junior high school student. 4.Alice and Helen _ students. is are am are 2、否定句式: Li Ming is not kind. I am not your brother. You are not my dad. am not=’m not is not = isn’t are not=aren’t 主语+be(am/is/are)+not+其他. Have a try: Choose a right words 1.Li Ming _(is , isn’t) in Grade 8. (in Grade 9) 2.Alice and Helen _ (are, aren’t)teachers. (students) isn’t aren’t kind. is Is Po ? 一调: 把句中的be调到主语前; 二改:改换主语称谓,即将句中的主语I my mine we our ours等第一人称分别改为相应的第二人称you your yours 等; 三变号:句末句号改问号 肯定回答:Yes,+主语+be. 否定回答:No,+主语+ be+ not. 12 years old are Are They ? . Yes, it is. No, they aren’t. 3、一般疑问句的构成: Am/Is/Are + 主语+其他 …? they Have a try: Change the sentences into Yes/No questions 1.Li Ming is in Grade 9.(肯定回答) 2.Alice and Helen are students.(肯定回答) 3.I am a student.(否定回答) Is Li Ming in Grade 9? Yes, he is. Are Alice and Helen students?Yes, they are. Are you a student? No, I ’m not from Germany? what why when where who whose whom which Where Is she is how from? 4、特殊疑问的构成: 特殊疑问词+am/is/are+ 主语+其他 ? + 一般疑问句 Have a try:Question the underlined part. 3. My name is Li Ming. What is your name? 2. They are my good friends. Who are they? 1.Alice is from England. Where is Alice from? 系动词be的一般现在时结构 Be动词 肯定式 主语+(be)am/is/are+其他 否定式 主语+(be)am/is/are +not+其他 一般疑问式 (Be)Am/Is/Are+主语+其他 …? 特殊疑问式 特殊疑问词+(be)am/is/are+主语+其他? Summary $